The gaming software design has come a long way since the first electronic descendants of the 19th century’s Liberty Bell were lined up in the casino halls, featuring the PG-13 imagery and naïve aesthetics. As the market evolved, slot machines developed into more complex platforms, but the true revolution was sparked with the arrival of online casinos and the expansion of internet gambling.
While choosing online slots to play for free, pay attention to such factors: RTP, volatility, number of paylines and max payout. Mega Moolah slot is considered to be one of the best slots, due to its record-winning jackpot payouts. What are the best slot machine games with the highest payout ratio and where can I play them – perhaps combine them with a casino bonus or some free spins? In this list, you will find the best online slot games to win, the highest RTP slots 2019 and of course the highest RTP slots 2020! New customers only. Opt-in required. 1st deposit bonus 100% up to £200. 2nd deposit bonus 50% up to £200, 3rd deposit bonus 25% up to £200, 4th deposit bonus 25% up to £200. 40x wagering, 30 days to complete wagering, game weighting and game restrictions apply. Max Bet with bonus funds £5. Eligibility restrictions apply.
The simple 3-reel machines were pushed aside to make room for visually supreme releases with more sophisticated structure and features, going as far as to adapt the slots to Virtual Reality technology.
The new age also created the need to provide the players with more engaging content, and the usage of the popular sex in advertising method did not bypass the gambling industry. To maintain the competitive edge, the software developers started looking for new ways to appeal to their target audience, launching slots of a more provocative nature (for both land-based and online gambling markets).
While these are still not something that you will find in just any venue, adult content slots that feature erotic (or even soft pornographic material in some cases) have a solid fan base, attracting those with more explicit taste.
So, if you ever find yourself feeling particularly naughty, the adult slots listed below might warm up a lonely night and provide a few hours of uncensored fun.
Scandinavian Babes by Play’n GO
Compared to some releases from this list, Scandinavian Babes slot is quite toned-down, leaning more towards moderate erotica. Played on 5×3 reel grid across 15 adjustable lines, this Play’n GO online slot allows the players to bet as little as $0.01 on a single active line, or press the bet to $18.75 per spin (by activating all 15 lines, increasing the denomination, and wagering up to 5 coins per line).
The volatility is between medium and high and the hit frequency of bonus features is somewhat low.
Bonus Features
The game benefits from Free Spins that may be particularly difficult to trigger at times, but the base game wins will still land frequently.
Free Spins
Free Spins are activated by the stacked Wild Brunette on the first and last reel. This will set in motion 15 bonus rounds, during which reels 1 and 5 will hold still while the rest of the columns are spinning.
Free Games
A classic picking game that can award up to 150x multiplier. All you need to do is select one of the 3 dancers and a cash prize will be revealed (along with the other two prizes that you did not get).
Gamble
This feature activates after every win, enabling you to double the payout every time you guess the colour of the card facing down. The payouts are higher if you manage to guess the suit as well. The feature is, of course, optional, and you can simply collect the money and continue the session without gambling.
Overall Rating
Level of Erotica: Low/Medium
Bonuses (on the scale of 1 to 5): 3
RTP: 94%
Variance: Medium to high
Playboy Slot by Microgaming
Playboy by Microgaming is a 243 ways to win slot launched in 2013, generating up to 1,215,000 coins per spin. Despite the legacy of the brand, Playboy slot designers have shown an impressive amount of restraint, opting for a sexy rather than a raunchy interpretation of the theme (you can check our comparison of all Playboy slots).
Bonus Features
The Bunny is the Wild symbol that doubles the payout every time it completes the winning combination. It can also replace all other icons except for the Stack of Playboys Scatter, which triggers the Playboy Club Free Spins.
Free Spins
As mentioned, the bonus rounds in Playboy slot are unlocked when the combination of 3 to 5 Scatters is formed on the reels, initiating one of the following Free Spins modes:
- Kimi (unlocked at the initial bonus feature activation): 15 re-triggerable Free Spins with x5 multiplier
- Sofia (unlocked on the 5th bonus feature activation): 15 Free Spins with Running Wilds. The stack of Wilds increases on every spin.
- Ashley (unlocked on the 10th bonus feature activation): 20 Free Spins with Rolling Reels and progressive multipliers (up to x5)
- Jillian (unlocked 15th bonus feature activation): 25 Free Spins with randomly triggered Wild Night Feature which will make up to 5 reels wild.
Sofia, Ashley, and Jillian Playboy Club Free Spins cannot be re-triggered.
Overall Rating
Level of Erotica: Mild to medium
Bonuses (on the scale of 1 to 5): 4
RTP: 96.57%
Variance: Medium to high
Twerk Slot by Edorphina
Those with an appreciation for curves will enjoy Endorphina’s 5-payline slot immensely. Not only does the 2016 release celebrate the female form in all its glory, but it also produces up to 250,000 coins per spin.
The gameplay is quite simple, and Endorphina seems to rely on derrières and upbeat music to keep the players engaged.Bonus Features
The dynamic Battle Feature with bonus points awarded every time your dancer defeats the opponent in the dance-off (or twerk-off, in this case).
Free Spins with Battle Feature
3 Scatter symbols will activate the Free Spins with the Battle Feature, during which one of the girls will be singled out to compete with other dancers. The battle will last up to 6 rounds and whoever scores more points will win. The feature is re-triggered if more Scatters land on the reels, adding 3 more dance rounds.
Risk Game Gamble Feature
Every payout can be increased up to 10 times if the player’s card beats the virtual dealer. You will have four cards to choose from – Joker trumps all hands, and only the player can draw this card. Same value cards will be resolved as a push.
Overall Rating
Level of Erotica: Mild
Bonuses (on the scale of 1 to 5): 2
RTP: 96 %
Variance: High
Benchwarmers Football Girls by Playtech
This slot combines two ultimate fantasies of an average male – football and provocatively dressed ladies. Benchwarmers Football Girls is a 30-payline game that’s suitable for both high limit slots players and recreational players. The lines can be adjusted, allowing you to bet $0.20 – $3,000 per spin.
The Benchwarmer Girls are the high paying symbols, with the eager supporter of the Italian football club as the highest-value icon. The next in line are four equally enthusiastic females, who were so eager to see the game that they rushed to the court wearing nothing but their underwear…
Bonus Features
The slot offers Free Games with the Bench Warmer feature and Football Bonus where you can reveal cash prizes.
Free Games with Bench Warmer Feature
The Free Rounds are activated by 3+ Bench Warmer Scatters and before the feature is initiated, you can select any of the Benchwarmer Girls to cover the first reel. The symbol will remain locked on the reel for the next 4 spins – the rest of the girls will not land on the grid during the feature.
Bench Warmer bonus can be re-activated an indefinite number of times.
Football Bonus
If a Bonus symbol lands on the reels 1 and 5, the Football Bonus picking game will be initiated, prompting you to pick 3 out of 5 balls and reveal cash prizes. Unfortunately, this feature cannot be re-triggered.
Overall Rating
Level of Erotica: Mild to medium
Bonuses (on the scale of 1 to 5): 3
RTP: 95.97%
Variance: Medium to high
Red Lights by Tom Horn Gaming
A steaming hot release, inspired by the infamous Red Lights district in Amsterdam, where love (or lust) is for sale day and night. Instead of using real-life footage, Tom Horn Gaming decided on a more tactful approach (for the lack of a better expression). This will not diminish the eroticism of the slot, and even the animated girls are quite capable of raising the players’ heartbeat levels.
Bonus Features
The slot features two Wild Symbols which can replace all other icons and activate the Free Spins.
Sticky Expanding Wild
The Free Spins start when one of the two Wild Girls lands on reels 1 or 5, locking into the landing position and expanding across the entire reel. Additional spins can be triggered if more Wilds appear on the grid. The payouts generated in the Free Spins will be doubled if a single Expanding Wild is locked on the reel or quadrupled if two Wilds share the grid.
Strip Gambling Feature
All payouts can be boosted in the Strip Gambling Feature, which is quite cheeky, inviting you to strip one of the girls. To double the winning amount, you will have to guess which of the two symbols hides behind the silhouette in the middle of the game screen. Every time your guess is correct, the amount will be doubled.
Mystery Win Feature
Mystery Bonus is awarded randomly – a combo of 3 X symbols can form a combination in the middle of the screen and award a cash prize on any spin.
Overall Rating
Level of Erotica: Medium
Bonuses (on the scale of 1 to 5): 4
RTP: 96%
Variance: Medium
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Honourable Mentions
Super Quick Hit Playboy Sunset Sapphires
Super Quick Hit Playboy Sunset Sapphires is a land-based slot cabinet manufactured by Bally. The game is the part of the series, and you can also try your luck on the Super Quick Hit Playboy Midnight Diamonds, which is just as sexy.
Bonus Features
The Sunset version introduces the Cash Wheel Bonus, Respin Bonus, 2 Free Games features and the Quick Hit Progressive Jackpots. For a chance to win a jackpot, you will need to press the bets.
Super Quick Hit Feature
Activated by a cluster of Scatters which either pay up to 1,500x player’s bet or trigger the Quick Hit jackpot on a maximum bet.
Respin Bonus Feature
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3 stacked Super Quick Hit icons will start this bonus, during which the reel grid will expand, adding 3 additional rows. Any extra Super Quick Hit icons that land during the feature will remain locked on the reels.
Wheel Bonus Feature
The Wheel Bonus icon can only land on reels 2- 4, granting a spin on the wheel. The spin can award a cash prize with a multiplier or one of the two features:
- High Rise Free Games Feature – 8 free games with an increasing number of paylines (105 betways will be activated in the last two rounds)
- Sunset Sapphires Free Games – 6 free games with an increasing number of paylines and a random Booster Wheel Feature. Boost Wheel replaces all Super Quick Hit icons with a symbol that carries up to x10 their individual value.
Overall Rating
Level of Erotica: Medium
Bonuses (on the scale of 1 to 5): 5
RTP: N/A
Variance: Medium to high
Delicious Desires
Probably the most explicit slot on the list, Delicious Desires goes way beyond sexy and enters the reals of soft porn.
It is played on 9 paylines and every time a winning combination is formed, the featuring ladies become (believe it or not) even more loose, not leaving anything to the imagination.
Bonus Features
The main attraction of the slot, apart from the hot ladies, is the Free Games feature awarding trebled prizes.
Free Games
Free Games symbol starts 15 re-triggerable free spins, but only if it lands on the first and the last reel. During the bonus, all payouts will be multiplied by 3.
Gamble
One other way to increase your winning before collecting it would be to use the Gamble option. To double the amount, you must guess the colour of the card facing down. Or, to be more specific, you will need to opt for either Black or Red and then stop the flashing card.
Overall Rating
Level of Erotica: High
Bonuses (on the scale of 1 to 5): 2
RTP: N/A
Variance: Medium to high
What if — one day — you entered a slot machine bonus round and walked out $15,000,000 richer? For some lucky players, that has actually happened.
Long gone are the days when you spun 3 reels with fruit symbols on them and won a few free spins as a bonus round. These days, there are all sorts of awesome, entertaining bonus rounds which make video slots appear more like video games.
I’ve played thousands of slots in my time, and thousands of bonus rounds, too. I’m going to share the best I’ve encountered here.
Unsurprisingly, most of them give you the chance to win huge amounts of cash, which is part of what makes them so great to begin with!
The Mega Fortune Bonus Wheel
When it comes to slot machine bonus wheels, most people think of Mega Moolah by Microgaming first. While that is a pretty cool feature, I personally think the Mega Fortune bonus wheel is slightly better.
This is a feature that will get your adrenaline pumping for sure. It’s a multi-layered wheel with cash prizes and several progressive jackpots up for grabs.
So, how do you win the Mega Jackpot and walk away a millionaire? Each time the wheel spins, you need to land on an arrow to proceed to the next layer. If you make it all the way to the center, you can officially call yourself filthy rich.
This feature can actually be triggered fairly often in Mega Fortune. A few days ago I was able to unlock it 3 times within the same quick session.
The Scary Rich 3 Free Spins Round
Unless you’re a hardcore slots player like myself, you might never have heard of Scary Rich 3 from Rival Gaming.
It’s a horror-themed slot which is relatively unremarkable overall, apart from the cracking free spins bonus round. If you manage to trigger it with 5 scatter symbols you will get 666 free spins, which I can tell you from experience takes around half an hour to play through.
While that’s a heck of a lot of free spins and is enough to make this bonus round noteworthy by itself, there are also expanding wilds in play throughout. These significantly increase your chances of making winning combinations.
As I said before, it’s one of those slots few have heard of, but I have personally never seen another slot offering as many free spins in one feature.
The Avalon II Grail Bonus Feature
Sometimes a bonus feature is actually multiple bonus rounds all rolled into one, and that’s the case with the Grail feature in Avalon II from Microgaming.
If you manage to trigger this feature, you will have 8 different entertaining possibilities. There’s a dice roll game, 3 free spins rounds with up to 20 free spins and dynamic multipliers in one of them, 2 picking rounds with up to 160x your stake available, a fighting game with cash prizes, and a bonus wheel round, all within one feature.
This feature also has somewhat of a storyline to it, in which you need to retrieve ”the grail” and bring it back to Avalon. It’s got epic graphics and sound effects, which I have come to expect from Microgaming.
Why do I like this feature so much? Because it doesn’t get boring even when you trigger it multiple times within the same game. Oh, and you can win serious money, too.
The Breakaway Free Spins Round
Breakaway is an ice hockey themed game from Microgaming. It’s got loads of extra features, but the one which stands out most to me is the free spins round.
There are up to 25 free spins offered, which is nothing remarkable in and of itself, but all wins are instantly boosted 1,000% by a 10x multiplier.
Breakaway has a 125,000-coin jackpot, which is also worth playing for. Still, this is all about bonus rounds, and I definitely want to mention the free spins round here. Multipliers of 2x and 3x are common, but 10x deserves a special mention.
If the ice hockey theme doesn’t appeal, then either Football Star or Rugby Star also have free spins rounds with 10x multipliers. Check them out.
The Hall of Gods Picking Feature
Hall of Gods by NetEnt takes you back to the mythical era when Odin, Loki, and Thor ruled the minds of the Nordic people.
Thor’s hammer is a symbol we still recognize today, and it’s an important one in this bonus feature. How it works is that you take Thor’s hammer and smash various shields on the screen for cash prizes.
What makes this relatively simple feature so special? The fact that you can win millions instantly by finding one of the Hall of Gods progressive jackpots behind the shield you smash.
This feature has the power to make you a millionaire in a few seconds flat, and I think that makes it special, even if I haven’t yet had the good fortune to win it.
The Gonzo’s Quest Avalanche Reels
Gonzo’s Quest is one of NetEnt’s most popular slots of all time. It’s a simple game, but it has one brilliant feature I really like.
The “Avalanche Reels” make it possible to win multiple consecutive times off one single spin. This means that when you create a winning combination, the symbols involved disappear and are replaced by new ones, potentially unlimited times in a row.
While this is not totally unique in itself, Gonzo’s Quest adds extra spice to the rice by adding a dynamic multiplier element. For each consecutive win, a multiplier will increase by 1x, up to a maximum of 5x.
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Just imagine 5 wins in a row from one spin, with the fifth win boosted 500% automatically (after all the others). That’s why this feature deserves to be included on this list, in my view.
Casino Bonus Slot Machines
The Mega Moolah Bonus Wheel
There’s no rule against having two entries for great slots bonus wheels, right?
Slot Machine Bonus
While I stated clearly above that I feel the Mega Fortune bonus wheel is the best of the lot, the Mega Moolah one is still pretty immense.
This is more of a traditional bonus wheel, meaning there is just one layer to it. There are 4 progressive jackpots which can be won, starting with the Mini and going all the way up to the Mega.
If you’re lucky enough to land the Mega jackpot, welcome to the millionaire’s club! Mega Moolah is renowned for paying out ridiculous jackpots more suitable for a state or national lotto draw than a slot machine.